EP0983151A1 - Flachdruckverfahren - Google Patents

Flachdruckverfahren

Info

Publication number
EP0983151A1
EP0983151A1 EP98922957A EP98922957A EP0983151A1 EP 0983151 A1 EP0983151 A1 EP 0983151A1 EP 98922957 A EP98922957 A EP 98922957A EP 98922957 A EP98922957 A EP 98922957A EP 0983151 A1 EP0983151 A1 EP 0983151A1
Authority
EP
European Patent Office
Prior art keywords
area
ink
accepting
hydrophilising
ink accepting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP98922957A
Other languages
English (en)
French (fr)
Other versions
EP0983151B1 (de
Inventor
Harjit Singh Bhambra
Robert Michael Organ
Kelvin Dickinson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kodak Graphics Holding Inc
Original Assignee
Kodak Graphics Holding Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kodak Graphics Holding Inc filed Critical Kodak Graphics Holding Inc
Publication of EP0983151A1 publication Critical patent/EP0983151A1/de
Application granted granted Critical
Publication of EP0983151B1 publication Critical patent/EP0983151B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41NPRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N3/00Preparing for use and conserving printing surfaces
    • B41N3/08Damping; Neutralising or similar differentiation treatments for lithographic printing formes; Gumming or finishing solutions, fountain solutions, correction or deletion fluids, or on-press development

Definitions

  • This invention is based on an appreciation of the existence of a problem with commercially-available hydrogen fluoride based deletion fluids and, additionally, on the discovery of the reasons for the problem. More particularly, it has been discovered that commercially- available hydrogen fluoride deletion fluids attack the aforesaid hydrophilic layer at a greater rate than that at which they attack the image layer and, consequently, the hydrophilic layer is removed in localised regions contacted by the deletion fluid. Such localized regions may be cosmetically undesirable (since they imply a defective hydrophilic layer); and they may be undesirable from a performance perspective since they may be less hydrophilic and/or have a different ink-water balance compared to other regions of the plate and/or they may be more prone to wear.
  • Said particulate material may be organic or inorganic.
  • Organic particulate materials may be provided by latexes.
  • Inorganic particulate materials may be selected from alumina, silica, silicon carbide, zinc sulphide, zirconia, barium sulphate, talcs, clays (e.g. kaolin), lithopone and titanium oxide.
  • the fluid may include other compounds for adjusting its properties.
  • the fluid may include one or more surfactants.
  • Said fluid may include 0 to 1 wt% of surfactant(s) .
  • a suitable class of surfactants comprises anionic sulphates or sulphonates.
  • the fluid may include viscosity builders for adjusting the viscosity of the liquid.
  • Said fluid may include 0 to 10 wt%, preferably 0 to 5 wt% of viscosity builder(s).
  • the fluid may include dispersants for dispersing the inorganic particulate material throughout the fluid.
  • Said fluid may include 0 to 2 wt% of dispersant ( s ) .
  • a suitable dispersant may be sodium hexametaphosphate.
  • Said fluid may be applied to both sides of said support in order to form hydrophilic layers on both sides.
  • a support with such a layer on both sides may be used to prepare a double-sided lithographic plate.
  • the side of the plate which does not carry an image layer may be protected by the hydrophilic layer.
  • Said fluid is preferably applied to only one surface of said support.
  • the dried sheet prepared in Step 4 was immersed in aluminium sulphate (0.1M) for thirty seconds. The sheet was then spray rinsed for about twenty seconds using tap water and fan dried.

Landscapes

  • Printing Plates And Materials Therefor (AREA)
EP98922957A 1997-05-23 1998-05-22 Flachdruckverfahren Expired - Lifetime EP0983151B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GBGB9710552.2A GB9710552D0 (en) 1997-05-23 1997-05-23 Planographic printing
GB9710552 1997-05-23
PCT/GB1998/001504 WO1998052770A1 (en) 1997-05-23 1998-05-22 Planographic printing

Publications (2)

Publication Number Publication Date
EP0983151A1 true EP0983151A1 (de) 2000-03-08
EP0983151B1 EP0983151B1 (de) 2003-07-23

Family

ID=10812869

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98922957A Expired - Lifetime EP0983151B1 (de) 1997-05-23 1998-05-22 Flachdruckverfahren

Country Status (8)

Country Link
US (1) US6427596B1 (de)
EP (1) EP0983151B1 (de)
JP (1) JP2001525747A (de)
AU (1) AU7541798A (de)
DE (1) DE69816615T2 (de)
GB (1) GB9710552D0 (de)
WO (1) WO1998052770A1 (de)
ZA (1) ZA984347B (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6701843B2 (en) * 2000-09-18 2004-03-09 Agfa-Gevaert Method of lithographic printing with a reusable substrate
US6893798B2 (en) * 2000-11-21 2005-05-17 Agfa-Gevaert Method of lithographic printing with a reusable substrate
WO2002087882A1 (en) * 2001-04-26 2002-11-07 Mitsubishi Chemical Corporation Method and device for regenerative processing and printing
US20040025729A1 (en) * 2002-08-06 2004-02-12 Howard Fromson Method and apparatus for imaging a lithographic printing plate
EP2194429A1 (de) * 2008-12-02 2010-06-09 Eastman Kodak Company Gummierzusammensetzungen mit Nanoteilchen zur Verbesserung der Kratzempfindlichkeit in Bild- und Nicht-Bild-Bereichen von lithografischen Druckplatten
CN116601188B (zh) * 2020-12-08 2025-07-04 韩华思路信株式会社 烯烃系聚合物及其制造方法

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US4072589A (en) 1977-04-13 1978-02-07 Polychrome Corporation Process for electrolytic graining of aluminum sheet
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Non-Patent Citations (1)

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Title
See references of WO9852770A1 *

Also Published As

Publication number Publication date
AU7541798A (en) 1998-12-11
US6427596B1 (en) 2002-08-06
DE69816615D1 (de) 2003-08-28
WO1998052770A1 (en) 1998-11-26
EP0983151B1 (de) 2003-07-23
DE69816615T2 (de) 2004-04-15
ZA984347B (en) 1999-01-21
GB9710552D0 (en) 1997-07-16
JP2001525747A (ja) 2001-12-11

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